The particles will spread out more, and have more space between them
Answer:
1 mole of carbonic acid=6.023×10^23 molecules
now
9.74×10^20molecules=
1/(6.023×10^23 molecules)×9.74×10^20molecules
=<em><u>1.617×10^-3 mole </u></em>
is your answer.
<h3>
Answer:</h3>
pH = 8.66
<h3>
Explanation:</h3>
- The pH refers to the acidity or alkalinity of a solution.
- It is calculated by getting the negative logarithm of Hydrogen ions concentration.
In this case;
we are given [OH⁻] as 4.6 x 10^-6 M
We are required to calculate the pH
We need to know that;
pH + pOH = 14
pOH = -log[OH⁻]
To get the pH we can calculate the pOH first,
pOH = -log[4.6 x 10^-6 M]
= 5.34
but, pH + pOH = 14
Therefore, pH = 14 - pOH
= 14 - 5.34
= 8.66
Therefore, the pH of the solution is 8.66
Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs
Answer: The correct option is D.
Explanation: We are given two gas molecules with different masses. The collision between them is elastic, hence the Total Kinetic energy of the system is conserved.
Initial Kinetic Energy:
Final Kinetic Energy:
where,
= mass of first molecule
= mass of second molecule
= initial velocity of first molecule
= initial velocity of second molecule
= final velocity of first molecule
= final velocity of second molecule
Elastic Collision:
That is,
.....(1)
We are given in the question that the final velocity of first molecule is decreased by 1/4, which means:
Putting this value in equation 1 , we get
taking on other side, we get
From the above relation, it is visible that the velocity change of the second molecule depends on both mass and velocity of the first molecule.